Prompt for dimmability; record it in metrics.json

y / n / Enter-if-unknown at the station; only known values are
written, and the scaffolded device page gets a Dimmable spec.

lamp_export.py

@@ -181,6 +181,8 @@ def write_bundle(reading, out_dir, meta, n_readings, supply=None):
     if meta.get("type"):
         # Lamp technology: led, halogen, cfl, incandescent, ...
         metrics["type"] = meta["type"]
+    if meta.get("dimmable") is not None:
+        metrics["dimmable"] = meta["dimmable"]
     if meta.get("variant"):
         metrics["variant"] = meta["variant"]
     if meta.get("rated"):

lamp_station.py

@@ -196,6 +196,8 @@ def scaffold_device_page(web_repo, lamp_id, meta):
         specs.append(("EAN", meta["ean"]))
     if meta.get("type"):
         specs.append(("Type", meta["type"].upper() if meta["type"] in ("led", "cfl") else meta["type"].capitalize()))
+    if meta.get("dimmable") is not None:
+        specs.append(("Dimmable", "Yes" if meta["dimmable"] else "No"))
     if meta["variant"]:
         specs.append(("Variant", meta["variant"]))
     if "Power_W" in rated:
@@ -271,6 +273,10 @@ def measure_one(ean, args, data_repo):
     model = prompt("Model", model)
     lamp_type = prompt("Type (led / halogen / cfl / incandescent / ...)",
                        previous.get("type", "led")).lower().strip()
+    prev_dim = previous.get("dimmable")
+    dim_default = "" if prev_dim is None else ("y" if prev_dim else "n")
+    dim_raw = prompt("Dimmable? (y / n, Enter if unknown)", dim_default).lower()
+    dimmable = True if dim_raw.startswith("y") else False if dim_raw.startswith("n") else None
     variant = prompt("Variant (e.g. daylight / warm white, Enter if none)",
                      previous.get("variant", "")).lower()
     notes = prompt("Notes", previous.get("notes", "retailer-internal barcode, brand unknown"
@@ -293,9 +299,9 @@ def measure_one(ean, args, data_repo):
            "enable": True}
     readings, supply = readings_from_device(port, args.readings, False, psu)
     reading = average_readings(readings)
-    meta = {"name": lamp_id, "ean": ean or "", "type": lamp_type, "variant": variant,
-            "manufacturer": manufacturer, "model": model, "notes": notes,
-            "rated": rated}
+    meta = {"name": lamp_id, "ean": ean or "", "type": lamp_type, "dimmable": dimmable,
+            "variant": variant, "manufacturer": manufacturer, "model": model,
+            "notes": notes, "rated": rated}
     out_dir = data_repo / "lamps" / lamp_id
     tm30 = write_bundle(reading, out_dir, meta, len(readings), supply)